Ви також можете використовувати всю функціональність [Starlette](https://www.starlette.dev/) у `FastAPI`.

///

### Крок 2: створюємо «екземпляр» `FastAPI` { #step-2-create-a-fastapi-instance }

{* ../../docs_src/first_steps/tutorial001_py310.py hl[3] *}

Тут змінна `app` буде «екземпляром» класу `FastAPI`.

Це буде головна точка взаємодії для створення всього вашого API.

  private final transient SortedMap<K, V> sortedDelegate;

  // The comparator used by this map.  It's the same as that of sortedDelegate,
  // except that when sortedDelegate's comparator is null, it points to a
  // non-null instance of Ordering.natural().
  // (cpovirk: Is sortedDelegate's comparator really ever null?)
  // The comparator will likely also differ because of our nullAccepting hack.
  // See the bottom of the file for more information about it.

## Specifying Access Control with IAM Policies

The STS API authenticates the user by verifying the JWT provided in the request. However access to object storage resources are controlled via named IAM policies defined in the MinIO instance. Once authenticated via the STS API, the MinIO server applies one or more IAM policies to the generated credentials. MinIO's AssumeRoleWithWebIdentity implementation supports specifying IAM policies in two ways:

		sys.arnErrsMap[arn] = arnErrs{
			updateInProgress: v.updateInProgress,
			count:            v.count + 1,
		}
	}
}

// GetRemoteTargetClient returns minio-go client for replication target instance
func (sys *BucketTargetSys) GetRemoteTargetClient(bucket, arn string) *TargetClient {
	sys.RLock()
	tgt := sys.arnRemotesMap[arn]
	sys.RUnlock()

	if tgt.Client != nil {
		return tgt.Client
	}

type ArrayOf[T RoundTripper] struct {
	aPool sync.Pool     // Arrays
	ePool bpool.Pool[T] // Elements
}

// NewArrayOf returns a new ArrayOf.
// You must provide a function that returns a new instance of T.
func NewArrayOf[T RoundTripper](newFn func() T) *ArrayOf[T] {
	return &ArrayOf[T]{
		ePool: bpool.Pool[T]{New: func() T {
			return newFn()
		}},
	}
}

// New returns a new empty Array.

./mc mb minio2/newbucket2

# delete bucket2 on minio2. This should replicate to minio1 after it comes online.
./mc rb minio2/bucket2

# Restart minio1 instance
minio server --config-dir /tmp/minio-internal --address ":9001" http://localhost:9001/tmp/minio-internal-idp1/{1...4} http://localhost:9010/tmp/minio-internal-idp1/{5...8} >/tmp/minio1_1.log 2>&1 &

 * in Fess web templates, including date formatting, localization, file operations, and
 * query parameter handling.
 *
 * @since 1.0
 */
public class FessFunctions {
    /** Logger instance for this class */
    private static final Logger logger = LogManager.getLogger(FessFunctions.class);

    /** Prefix for geographic query parameters */
    private static final String GEO_PREFIX = "geo.";

  }

  @Retention(RetentionPolicy.RUNTIME)
  private @interface NotBlank {}

  /** Class for testing constructor, static method and instance method. */
  @SuppressWarnings("unused") // most are called by reflection
  private static class Prepender {

    private final String prefix;
    private final int times;

    memory!

    The best practice in OkHttp 3 is to create a single OkHttpClient instance
    and share it throughout the application. Requests that needs a customized
    client should call `OkHttpClient.newBuilder()` on that shared instance.
    This allows customization without the drawbacks of separate connection
    pools.

然后你可以声明一个变量是 `Person` 类型：

{* ../../docs_src/python_types/tutorial010_py310.py hl[6] *}

接着，你会再次获得所有的编辑器支持：

<img src="/img/python-types/image06.png">

注意，这表示“`one_person` 是类 `Person` 的一个实例（instance）”。

它并不表示“`one_person` 是名为 `Person` 的类本身（class）”。

## Pydantic 模型 { #pydantic-models }

[Pydantic](https://docs.pydantic.dev/) 是一个用于执行数据校验的 Python 库。

你将数据的“结构”声明为带有属性的类。

每个属性都有一个类型。